Outlook Calendar just stopped allowing for scheduling

[OilmanNJ]

Recently the Outlook for Android App, stopped being able to schedule for calendar appointments. You cannot add invitee to event, nor is there ability to click the check mark to SAVE the appointment or event.

Just happened in last 2 weeks. We work in OFFICE 365 environment, and all my other devices work fine, IPAD / Surface - Desktop.

Office 365 support could not help..